Whats my fiancee's problem???

My fiancee of 2 years is a Fireman and is completely irritating me. Usually he texts me or calls me constantly during work. Well he hasn't text me in an hour .His last text was, "on an emergency call" so I've been calling and texting him constantly to see if he's ok and he hasn't answered. So I said, "Fine whatever. TTYL jerk." He's really pissing me off. What a . All he cares about is that damn job, he doesn't care about me and Im sick of it. I should give him divorce papers and tell him to go marry a damn fire truck. He can't even take the time to tell me he's ok. What a great guy. Whats his problem??